Shin Seiki Evangelion: Koutetsu no Girlfriend

Fourteen-year-old Mana Kirishima (voiced by Megumi Hayashibara) is transferred to Shinji Ikari's school, and almost immediately they begin to establish a special relationship. This provokes much jealousy in Asuka, who also suspects that Mana is a spy who is trying to get information from Shinji about NERV and the Evas. Rei Ayanami is present but plays a rather background role in the story, though she seems to agree with the suspicions of Asuka. Gradually, a relationship between Mana and Shinji unfolds and they end up going on a date. It turns out, however, that Mana is one of three test pilots for the TRIDENT (alternatively named the "Country Crawler") units, a new competitor to the Evangelions, similar to Jet Alone; thus the name Girlfriend of Steel. Eventually, the TRIDENT goes berserk and the Evas have to destroy it.

The interactivity in most of the game is limited to walking around areas until the next plot event is triggered. However, the one true branch occurs at the end of the game, where the player may choose to focus on Mana, Asuka or Kaji. This choice determines which of the game's three endings are shown.